کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1463198 | 989644 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dependence of photocatalytic activity on structural and optical properties of nanocrystalline ZnO powders
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Nanocrystalline ZnO powders were prepared from cetyltrimethylammonium bromide (CTAB)-modified NaOH, NH4OH and (CH2)6N4 solutions. The calcined ZnO powders exhibited a hexagonal structure without any secondary phase. Different shapes of ZnO powders were formed depending on CTAB concentration and type of precipitating agent. As (CH2)6N4 solution was used, rod-like ZnO structure was changed to a spherical shape when CTAB concentration was increased. The widest Eg value of approximately 3.23 eV was obtained from the sample containing the lowest defect concentration. The decolorization efficiency was higher than 90% after irradiating for 90 min and the sample with higher Eg value showed higher decolorization efficiency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 37, Issue 7, September 2011, Pages 2247–2253
Journal: Ceramics International - Volume 37, Issue 7, September 2011, Pages 2247–2253
نویسندگان
Sumetha Suwanboon, Pongsaton Amornpitoksuk, Nantakan Muensit,